Variable reciprocating traverse mechanism



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VARIABLE RECIPROCATING TRAVERSE MECHANISM Filed Aug. 22. 1921 2 Sheets-Sheet 1 s Q o... 0

v s. R. WRIGHT VARIABLE RECIPROCATING '.LRAVERSE MECHNSM Filed Aug. 22. 1921 -2 Sheets-'Sheet 2 'I Patented Oct. 2, 1923.

I .Tum ROBERT WRIGHT, OF RAWDON, NEAR LEEDS,

ENGLAND, ASSIGNOB TO IGBANIC ELECTRIC COMPANY LIMITED, OFLONDON, ENGLAND, A CORPORATION OF GREAT BRITAIN.

VARIABLE BECIPBOCATING TEAVERSE MECHANISH. Application tiled Aug-ult 22, 1921. Serial No. 494,410. (Gm m28. THE 2110171810118 F THE ACT 0F MARCH 3, 1921, 41 STAT. L., 1318.)

To all whom it may concern.'

Be it" known that I, STANLEY ROBERT Warum', a subject of the King of Great Britai and resident of Rawdon, near Leeds,n7Yorkshire, En land, have invented certain new and use u1 Improvements in and Connected with Variable Reci recatdriven unidirectionaly. e 1

ing Traverse Mechanism (for which have obtained a patent in Great Britain dated May 29, 1919, No. 149,104), of which the following is a specification.

This invention relatesto that type of reciprocating traverse mechanism vfor coil wlnding machines in which the wire or thread guide is reciprocated across the face of the spool by means of a continuous band One object of the invention is to provi mproved means in a mechanism o the above type for operatively connecting the wire or thread guide to such a band.

Another object is to .provide means for automatically varying the shape of the coil according to varying requirements.

Other objects and advantages will appear hereinafter.

In order that the invention may be clearly understood the same will now be described by aid of the accompanying drawings in which Fig.v 1 is a plan view of part of a coil windmg machine to which this invention is applied.

F1g. 2 is a side of the same. f

l Fig. 3 is an end view of Fig. 2.

Fig. 4 is a section of a magnetic pulley used in connection with the .inventionI in the present example of the same.

Fig. 5 is adiagram of the electrical connection of the apparatus.

According to the practical application of the invention shown in the drawings and as applied to a coil winding machine for repartly sectional elevation ciprocating the wire or cotton traverseA guide, the constant speed single direction motion is obtained from a motor not shown and is imparted to one. of the band carryin pulleys a through the medium of beve gears c, which', in the present application, re lace the usual cam.

o obviate slipping of the band under the net. The other end o the endless band 1s supported by an idler pulley b which is held 1n variable spaced relation withI the magnetic'pulley by tie-rods f which also serve as slides or guide bars for the magnet carryin member g.

This mem r, in the present example, carries a palr of ma ets l. andi connected in serles the poles y of which are in vertical ahgnment with each other, the outer faces y1 of such eachap reaching to within a small distance of t e inside faces of the top and bottom runs respectively of -the steel band d. In conjunction `with each magnet pole is a p-ivoted armature lo each of which is disposed with the respective run of the steel band interposed between such armature and its pole.. Upon alternate energization of the magnets the respective runs of the steel band are correspondin ly attracted thereto and augmentation of t 1s grip is obtained by th'e subsequent attraction of the respective armatures-with the result that the magnet carrying member is re1 ciprocated upon its guide bars.

Two links la* pivotall connected at their ends to opposite lugs 2 res ectively rojecting from the hinge mem rs to w 'ch the armatures k are rigidly attached, are provided for ensuring that the upper armature shall be lifted clear of the endless band d when the lower armature a is attracted to its corresponding' magnet.

Alternate energization of the magnets is e'ected by means of a pair of contacts Z lsee Figs. 1 and 3, which are mounted in adjustable connection with a fixed rod or rods m which are insulated for the purpose so as to reside one upon each side of the magnet carryingmember g. These adjustable contacts are caused to alternately be engaged by corresponding faces n on a contact secured to-in the present example-the wire guide o of the coil winding machine.

This wire guide is pivotally connected to the magnet carrying member as at p so as net is cl and forms a grippin two mets are pl to move therewith and in a plane at right ngles to the anis oi the coil to be wound.

n face of the lined contact and the corresponding adjustable contact rits in the short-circuiting of one of the magnets and full energzati'on of the other with the result that the armature of the energized magconnec tion with the corresponding run o the steel band and weer like movement of the maet rryin member.

1 @n traversing the full distance allowed by the other ad'ustable contact the process is repeated wit a consequent reverml of motion.

The electrical connections between the contacts and a g1 ets will be seen from Fig. 5 are such that whilst traversing thespace intermediate the two ad'ustable contacts the ,in series with one another. The resulting dur is suliicient to simultaneously operate the other whilst the current is out down to enable the coils to remain cool.

As indicated in dotted lines in the drawing, the pivot wire guide o rests ainst the periphery of the coil being Wound, therefore as the diameter oi the coil in-a creases, the pivoted wire guide is caused to corresmndingl turn about its pivot. This results in the acesl oitie fixed contac eina 'n pro ssive i erent points o `t e djgiistble gcbentact ysurfaces. This feature is utilized to automatically obtain varia.-

-tons in the shape of the wound coil, such shape being a replica of the shape deined by the opposing edges of the adjustable contacts, which eds also control the length of traverse o the mat carrying member and, as a consequence, the length of traverse et the wire guide. Thus in the embodiment illustrated, as the coil grows the wire guide will be turned about Vthe pivot p in a counter clockwise direction (according to Fig. 3) and lthe contacts n will engage with t e contacts Z for effecting reversal of the wire guide, after strokes of progressively diminishing am litude. The length of traverse will accor ingly diminish' with the result that a coil with beveled ends will be produced.`

Had the contacting surfaces of the contacts l been at right angles to the stroke of the wire dguide, it is obvious that a straight ende coil would have been produced.

What l claim and desire to secure by Letters-Patent is 1. A traverse mechanism tor coil winding machines, comprising a reciprocable guide for the material to be wound, electromagnetic means associated with said guide and movable therewith', an endless belt, of magnetic material adapted to be driven uni operation the engagement between one.

ateatro ltadapated to travel in reil@ magnets conne to said lguide and mov- "tei ableI therewith, armatures for said .fclectro- -L magnets, an endless belt of magneticmate,l rial adapted to be driven unidirectional. and so arranged that portions of its lengt which travel in reverse senses pass respec-` tively between each electromagnet andrits armature, and means for alternately energizing said electromets so as to cause them to attract each its armature and `thei portion of the belt passing between the magnet and its armature.

3'. A' trave mechanism for coilwinding. machines comprising a.A reciprocable guide for the material to be wound, two electro-1 magnets in line with one another and rig. idly connected to said guide, armatures ford the remote poles of the electroniagnets` rer spectively, said armatures being connd together' whereby attraction of one armar,

ture to its respective pole eects movement of the other armature from its respective f pole, an endless belt of magnetic material adapted to be driven unidirectionally and so arranged that portions; of yitslength whichl travel in reverse .senses .pass respectively between each electroma et and its armature and means :lor .aternately energizing -said electromagnets so asl to cause them to attract each its armature and the portion ot the belt passing between itself and its armature. .l ,l

d. A traverse mechanism for coil winding machines, comprising a reciprocable guide for the material to be wound, two eleczstr'o-y magnets connected to said guide and ,mov-

able therewith, an armature for each elec-` tromagnet, an endless belt of magnetic .material adapted to be driven unidirectionall f and so arranged that portions of itslengt which travel in reverse senses pass respec. tively between each electromagnet :and itsV armature, means whereby .the windings of. said electromagnets are normali both energized, and means for momentari y short circuiting said-windings alternately each time the guide reaches the end of its stroke. whereby said electromagnets are adapted to alternately attract and hold each.. its

armature and the (portion of the belt passing between itself an its armature.

5. A traverse mechanism for coil winding machines, comprising a guide for the material to be wound, means for eecting reci rocation of said guide longitudinally of tlie coil, electrical contacts adapted to engagel lll@ lll@

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with one another for controlling the operation of said means, certain of said contacts being movable in accordance with the movement of said guide to engage with other of said contacts and thereby cause said means to eect reversal of said guide at each end of its stroke, and further means for causing the point of engagement of said contacts with another to va in accordance with the amount of material Wound,whereby val0 riations in the surface contour of certain of said contacts will cause corresponding variations in the shape of the coil.

In witness whereof I alix my signature.

STANLEY ROBERT WRIGHT; 

